The handle punches through the metal. If you want to put a window where the handle is, then you will have to cut up to where the handle-hole is. It's approx. 0.5" from the edge. There are some additional tab and lock holes that you will want to duplicate at the new location, but other than that it looks like it should work. There is nothing on the inside that lines up with the handle at that location, so that's not an issue. The only thing is that the latch does need to be on that edge somewhere. You can move it up or down and have it still work, but not to another edge on the door.
If you remove the handle entirely, the door might tend to fall off. It could be held in place with thumbscrews though.